某单位举行迎春茶话会，买来4箱同样重的苹果，从每箱取出24千克后，结果各箱所剩下的苹果重量的和，恰好等于原来一箱的重量．那么原来每箱苹果重______千克．

As for projects and operational work, which of the followings is proper

A．A project is constrained by limited resources and operational works generally have no such constraint

B．Projects and operations differ primarily in that operations are ongoing, projects are temporar

C．Projects are different because the project conclueds when its specific objectives have been attained, while operations are repetitiv

D．Operational works are not defined as a projec